One-way concealed-valve vented storage bag

Abstract

A one-way outwardly gas and moisture vented, plural-layer bag for a product, such as a dry bulk product, in which bag a concealed valve is positioned near one side, and close to the originally open top, of the bag. Openings in the valve communicate with confronting openings in a gas and moisture impervious inner layer in the bag.

I claim:  
     
       1. In a one-way, outwardly vented, elongate, plural-layer storage bag having an interior space for receiving and storing bulk material, such as powdered milk, where the bag, in a closed condition, has a pair of spaced, broad facial expanses that are suitably joined to one another adjacent lateral and opposite-end edges, and with the bag being defined, at least partially, by an inner gas and moisture impervious barrier layer, and by an outer layer having porosity which accommodates the outward flow of gas and moisture and which is disposed outwardly of the barrier layer, the structure comprising 
       a one-way gas and moisture flow-accommodating valve operatively disposed in said bag adjacent one of said expanses in a condition fully concealed from the outside of the bag by a region of said outer layer,  
       an openable/closeable valve opening in said valve openable to allow gas and moisture to flow unidirectionally outwardly only relative to the bag's interior space, and  
       at least one vent opening formed in the bag's said barrier layer disposed operatively adjacent and inwardly of said valve opening, and cooperable therewith to promote and permit such unidirectional, outward flow.  
     
     
       2. In a one-way, outwardly vented, elongate, plural-layer storage bag having an interior space for receiving and storing bulk material, such as powdered milk, where the bag, in a closed condition, has a pair of spaced, broad facial expanses that are suitably joined to one another adjacent lateral and opposite-end edges, and with the bag being defined, at least partially, by an inner gas and moisture impervious barrier layer, and by an outer layer having porosity which accommodates the outward flow of gas and moisture and which is disposed outwardly of the barrier layer, the structure comprising 
       a one-way gas and moisture flow-accommodating valve operatively disposed in said bag adjacent one of said expanses in a condition fully concealed from the outside of the bag,  
       an openable/closeable valve opening in said valve openable to allow gas and moisture to flow unidirectionally outwardly only relative to the bag's interior space, and  
       at least one vent opening formed in the bag's said barrier layer, and disposed operatively adjacent and inwardly of said valve opening, said vent opening being cooperable with said valve opening to promote and permit such unidirectional, outward flow.